For automation, it's often best to use packages rather than mess with meta-tools like rbenv and rvm which can be very brittle when not used manually by a single user. So, this tiny project makes creating ruby packages super simple.
This project currently targets Ubuntu 14.04.
First, make sure the variable RUBY_BUILD_VERSION is up-to-date in the Vagrantfile. The version should correspond to an available ruby version on the official ruby source download site.
vagrant up
This will automatically run the build process for whichever RUBY_BUILD_VERSION you specified. The *.deb package generated will appear in this directory when the task is completed. Then you can commit the package, or copy it somewhere else.
For example:
> ls -lh
total 139304
-rw-r--r-- 1 dev staff 1K Jan 14 18:37 README.md
-rw-r--r-- 1 dev staff 2.5K Jan 14 18:36 Vagrantfile
-rw-r--r-- 1 dev staff 27M Jan 14 18:36 ruby-2.2.4_1_amd64.deb
-rw-r--r-- 1 dev staff 41M Jan 14 18:30 ruby-2.3.0_1_amd64.deb
If the VM is already running and you would like to build a new ruby package, do this:
vagrant provision
If there is a security update or other improvement that does not trigger a version number change, then modify the -v 1 part of the fpm command to be -v 2 (or higher). That increases the version number for the package so that apt-get will know to replace the older package on your system when you update it.